[DMCForum] Re: A strange and disturbing issue
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[DMCForum] Re: A strange and disturbing issue



Thanks guys.

Rich hit the nail on the head. Someone on the DML said the same thing.
Today my passenger side door lock decided to act up on me, only
working some of the time. I disconnected the lock module.

I'm going to replace the relays & diodes in this sucker tonight and
see what I can come up with. Rich, what did you do to upgrade your
module? I'd just planned on dropping by the Rat Shack and buying a
couple of sealed automotive relays & diodes. Perhaps some resistors &
transistors to drop the standby voltage, too, while I'm at it.

-Ryan

--- In DMCForum@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote:
> Based on the time interval you describe it sounds like your lock
> module. The thermal trip takes about that long to reset and pop. Mine
> was doing it recently until I upgraded the lock module.
>
> Rich A.
> --- In DMCForum@xxxxxxxxxxxxxxx, "ryanpwright" <yahoo1@xxxx> wrote:
> > On my way home this evening, it was raining. I pulled into my
> garage,
> > turned the headlights off, opened my driver's door and shut down the
> > engine. I was enjoying a song and left the key on "accessory" for 30
> > seconds or so. I then realized that I still had the mode switch in
> > "defrost" and the fan blowing, so I flipped the mode switch to "off"
> > to save my battery.
> >
> > I then heard a new noise that I hadn't heard before. Every 15-20
> > seconds or so, a relay would click somewhere behind me and my
> interior
> > lights would dim slightly. The relay would stay energized for 2 to 3
> > seconds, then go off. I could hear a weird "buzzing" noise behind my
> > head when it was engaged. After a few rounds of this, I shut the
> radio
> > off but left the key in "accessory". I got out of the car and found
> > where it was coming from, but I have no idea how or why.
> >
> > With my door fully opened, the upper rear (closest to engine) corner
> > of the driver's side door comes into gentle contact with the roof
> > t-panel. When this relay - whatever it is - engaged, it was causing
> an
> > electrical short between the t-panel and the door! Since the car was
> > wet from the rain, the sound I was hearing was water being vaporized
> > from a few cm or so around that contact point! I observed this
> through
> > several cycles of the relay to be positive of what I was seeing.
> >
> > Further troubleshooting:
> >
> > - I partially closed the door to eliminate the contact with the
> > t-panel and waited for the relay to engage. It did so, this time
> with
> > no water vaporization. All I heard was the click of the relay.
> Letting
> > the door back up, it went back to vaporizing water.
> >
> > - I turned the key to "off", then back to "accessory." The relay did
> > not continue to engage every 15-20 seconds. I did not restart the
> car
> > to test as I was now in my closed garage and was also eager to come
> > write this post before I forgot the details.
> >
> > So, questions:
> >
> > 1. What could this relay be?
> > 2. What could be causing it to short against the door like this?
> >
> > I believe something is wrong here.
> >
> > -Ryan


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